Enhanced multiferroic properties in Pr-doped BiFe0.97Mn0.03O3 films |
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| Affiliation: | 1. Institute of Technical Sciences of the Serbian Academy of Sciences and Arts, Knez Mihailova 35/IV, 11000 Belgrade, Serbia;2. Faculty of Mechanical Engineering, University of Belgrade, Belgrade, Serbia;3. Serbian Academy of Sciences and Arts, Knez Mihailova 35, 11000 Belgrade, Serbia;1. Department of Materials Science and Engineering, Indian Institute of Technology, Kanpur 208016, India;2. Department of Physics, Indian Institute of Technology, Kanpur 208016, India;3. Materials Science Programme, Indian Institute of Technology, Kanpur 208016, India;4. Functional Material Division, Solid State Physics Laboratory, Timarpur, Delhi 110054, India;1. Inner Mongolia Key Laboratory of Ferroelectric-related New Energy Materials and Devices, School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China;2. Department of Physics, Tangshan Normal University, Tangshan 063000, China;1. School of Science, Hubei University of Technology, Wuhan 430068, PR China;2. Hubei Collaborative Innovation Center for High-Efficiency Utilization of Solar Energy, Wuhan 430068, PR China;3. School of Physics and Technology, Wuhan University, Wuhan 430072, PR China;1. Department of Physics, SBSR, Sharda University, India;2. Department of Physics, MNNIT Allahabad, Prayagraj, India |
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| Abstract: | Bi1?xPrxFe0.97Mn0.03O3 (x=0.00, 0.05, 0.10, 0.15, 0.20) thin films were deposited on FTO/glass substrate using chemical solution deposition. The influences of Pr doping on the crystalline structure and multiferroic properties were investigated. In the X-ray diffraction and Raman spectra results, the crystal structures of Bi1?xPrxFe0.97Mn0.03O3 films revealed a gradual transformation from the trigonal structure to the tetragonal structure. The leakage current densities of Bi1?xPrxFe0.97Mn0.03O3 films are one order of magnitude lower than that of BiFeO3. Compared with unsaturated polarization-electric field hysteresis loop of BiFeO3 film, the Pr and Mn co-doped BFO films have significantly improved ferroelectric properties. The improved remnant polarization (Pr=91.3 µC/cm2) and the positive switching current (I=0.028 A) have been observed in Bi0.85Pr0.15Fe0.97Mn0.03O3 film. The improved electrical properties are attributed to the structure transformation, increasing grain boundaries, low oxygen vacancies ratio and increasing Fe3+ concentration. In addition, the saturation magnetization of Bi0.85Pr0.15Fe0.97Mn0.03O3 film is 1.81 emu/cm3, which is approximately three times higher than pure BiFeO3 (Ms=0.67 emu/cm3). |
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| Keywords: | Thin films Structure transformation Ferroelectric properties |
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